Running a store is very different from firefighting - arguably there is a much higher moral good being done by literally saving people from imminent death by bu

Running a store is very different from firefighting - arguably there is a much higher moral good being done by literally saving people from imminent death by burning. Firefighters are also paid in many places, even if volunteer services are available. Finally, they do have charitable "food delivery" places - they are called soup kitchens, but they are intended for people who can't afford food at all, not necessarily for people who have the money to buy what they need.